I am reminded of Order of the Stick's tendency to show evil characters doing silly or cute things every so often, only to have them do something vicious in the next breath, without any sense that they feel it is contradictory. Which of course it is not; the most depraved people can often still summon up a fondness for puppies. Personally, I don't find the running the-Devil-likes-ponies joke entertaining, but each to their own.